As a cultural movement Islam rejects the old static view of the universe, and reaches a dynamic view. As an emotional system of unification it recognizes the worth of the individual as such, and rejects blood-relationship as a basis of human unity. Blood-relationship is earth-rooted ness. The search for a purely psychological foundation of human unity becomes possible only with the perception that all human life is spiritual in its origin. Such a perception is creative of fresh loyalties without any ceremonial to keep them alive, and makes it possible for man to emancipate himself from the earth. Christianity which had originally appeared as a monastic order was tried by Constantine as a system of unification. Its failure to work as such a system drove the Emperor Julian to return to the old gods of Rome on which he attempted to put philosophical interpretations. A modern historian of civilization has thus depicted the state of the civilized world about the time when Islam appeared on the stage of History: It seemed then that the great civilization that it had taken four thousand years to construct was on the verge of disintegration, and that mankind was likely to return to that condition of barbarism where every tribe and sect was against the next, and law and order were unknown . . . The old tribal sanctions had lost their power. Hence the old imperial methods would no longer operate. The new sanctions created by Christianity were working division and destruction instead of unity and order. It was a time fraught with tragedy. Civilization, like a gigantic tree whose foliage had overarched the world and whose branches had borne the golden fruits of art and science and literature, stood tottering, its trunk no longer alive with the flowing sap of devotion and reverence, but rotted to the core, riven by the storms of war, and held together only by the cords of ancient customs and laws, that might snap at any moment. Was there any emotional culture that could be brought in, to gather mankind once more into unity and to save civilization? This culture must be something of a new type, for the old sanctions and ceremonials were dead, and to build up others of the same kind would be the work of centuries.